2024NatAs...8.1031V

Query : 2024NatAs...8.1031V

2024NatAs...8.1031V - Nature Astronomy, 8, 1031-1046 (2024/August-0)

Cygnus X-3 revealed as a Galactic ultraluminous X-ray source by IXPE.

VELEDINA A., MULERI F., POUTANEN J., PODGORNY J., DOVCIAK M., CAPITANIO F., CHURAZOV E., DE ROSA A., DI MARCO A., FORSBLOM S.V., KAARET P., KRAWCZYNSKI H., LA MONACA F., LOKTEV V., LUTOVINOV A.A., MOLKOV S.V., MUSHTUKOV A.A., RATHEESH A., RODRIGUEZ CAVERO N., STEINER J.F., SUNYAEV R.A., TSYGANKOV S.S., WEISSKOPF M.C., ZDZIARSKI A.A., BIANCHI S., BRIGHT J.S., BURSOV N., COSTA E., EGRON E., GARCIA J.A., GREEN D.A., GURWELL M., INGRAM A., KAJAVA J.J.E., KALE R., KRAUS A., MALYSHEV D., MARIN F., MATT G., McCOLLOUGH M., MEREMINSKIY I.A., NIZHELSKY N., PIANO G., PILIA M., PITTORI C., RAO R., RIGHINI S., SOFFITTA P., SHEVCHENKO A., SVOBODA J., TOMBESI F., TRUSHKIN S.A., TSYBULEV P., URSINI F., WU K., AGUDO I., ANTONELLI L.A., BACHETTI M., BALDINI L., BAUMGARTNER W.H., BELLAZZINI R., BONGIORNO S.D., BONINO R., BREZ A., BUCCIANTINI N., CASTELLANO S., CAVAZZUTI E., CHEN C.-T., CIPRINI S., DEL MONTE E., DI GESU L., DI LALLA N., DONNARUMMA I., DOROSHENKO V., EHLERT S.R., ENOTO T., EVANGELISTA Y., FABIANI S., FERRAZZOLI R., GUNJI S., HAYASHIDA K., HEYL J., IWAKIRI W., JORSTAD S.G., KARAS V., KISLAT F., KITAGUCHI T., KOLODZIEJCZAK J.J., LATRONICO L., LIODAKIS I., MALDERA S., MANFREDA A., MARINUCCI A., MARSCHER A.P., MARSHALL H.L., MASSARO F., MITSUISHI I., MIZUNO T., NEGRO M., NG C.-Y., O'DELL S.L., OMODEI N., OPPEDISANO C., PAPITTO A., PAVLOV G.G., PEIRSON A.L., PERRI M., PESCE-ROLLINS M., PETRUCCI P.-O., POSSENTI A., PUCCETTI S., RAMSEY B.D., RANKIN J., ROBERTS O., ROMANI R.W., SGRO C., SLANE P., SPANDRE G., SWARTZ D., TAMAGAWA T., TAVECCHIO F., TAVERNA R., TAWARA Y., TENNANT A.F., THOMAS N.E., TROIS A., TUROLLA R., VINK J., XIE F. and ZANE S.

Abstract (from CDS):

The accretion of matter by compact objects can be inhibited by radiation pressure if the luminosity exceeds a critical value known as the Eddington limit. The discovery of ultraluminous X-ray sources has shown that accretion can proceed even when the apparent luminosity considerably exceeds this limit. A high apparent luminosity might be produced due to the geometric beaming of radiation by an outflow. The outflow half-opening angle, which determines the amplification due to beaming, has never been robustly constrained. Using the Imaging X-ray Polarimetry Explorer, we measured the X-ray polarization in the Galactic X-ray binary Cygnus X-3 (Cyg X-3). We found high, >20%, nearly energy-independent linear polarization orthogonal to the direction of the radio ejections. These properties unambiguously indicate the presence of a collimating outflow from the X-ray binary Cyg X-3 and constrain its half-opening angle to ≲15°. Thus, the source can be used as a laboratory for studying the supercritical accretion regime. This finding underscores the importance of X-ray polarimetry in advancing our understanding of accreting sources.


Abstract Copyright: 2024 The Author(s), under exclusive licence to Springer Nature Limited

Journal keyword(s):

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
2 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1331 1
3 IRAS 18129-3305 Mi* 18 16 15.3805297824 -33 04 08.115391452         16.847 ~ 9 0
4 SS 433 HXB 19 11 49.5647697480 +04 58 57.827127648   16.854 14.643     A7Ib 2253 4
5 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2810 0
6 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
7 PSR J2021+3651 Psr 20 21 05.40 +36 51 04.5           ~ 218 1
8 PSR J2021+4026 Psr 20 21 30.496 +40 26 53.56           ~ 300 2
9 V* V404 Cyg HXB 20 24 03.8247037434 +33 52 01.961154861           G9/K0III/V 1370 0
10 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0
11 [MT91] 213 Psr 20 32 13.1247390384 +41 27 24.346666440 13.12 13.08 11.266     B0Vp 334 0
12 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 2035 2
13 EM* MWC 349A Or* 20 32 45.5291969760 +40 39 36.651807828           ~ 180 0
14 ICRF J205252.0+363535 Sy2 20 52 52.05501061 +36 35 35.3005698   22.083   21.200   ~ 112 2
15 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
16 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1

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